At UCLA’s Sleep Disorder Center, researchers stuck sensors to a reporter’s head, chest, stomach, and legs to measure electrical activity while he slept. He reports on new sleep research on PBS NewsHour.

t’s 3:45 a.m. as I write this. More than half of Americans surveyed this spring report very good or good sleep quality. Not me. Depending on when you ask, I’d probably fall into the 36 percent who rate their sleep “fair” or even the 13 percent who rate it downright poor. But I’ve been working on it.